NEW VERSION UPLOADED 2014-04-15
What do you do when evil space villains come to YOUR planet and try to take over? Why, you engage their ships in a billiards-style battle, that's what! At least, that's what you'll do in Sphear by Potato on the Table, a math-pool mashup with some tower defense elements thrown in for good measure. You start with only one type of unit to place on the field, but each level you beat provides you with reinforcements, each with their own abilities from extra health points to color-specific attacks. The enemy troops just keep coming, and they have their own abilities, attack points, health points and movement speed. Your strategy is to place your units in such a way that, as your enemies move around the board, you are able to intercept them for hits. You don't know which direction any one of them will move, so thoughtful unit selection and placement is key. Keep in mind, they are hitting you back.
Arguably, this game is a bit on the simple side, and would have benefited from a steeper learning curve. This doesn't really detract from its playability. The fact that, even when you think you have it figured out, you can still completely miss your target, or lose one of your units to bad planning provides some counterweight to that issue. The smooth, reliable physics allow you to bring your high school geometry talents to bear to keep your team out of trouble while socking it to the enemy units. The artwork is a departure from the majority of games we see these days, and indicates this developer has a style all his own. And don't worry about those 45 levels sucking away your life... if you leave the page and come back later, auto-save drops you right at the level you ended on.